Samsung Galaxy S21 vs OnePlus 9 Specs Comparison

Compare mobile phone specifications of up to three devices at once. Our specs comparison tool helps you find and compare the perfect phone for your needs.

8.5
Samsung Galaxy S21
9.0
OnePlus 9
Samsung Galaxy S21 OnePlus 9
Released · Jan 29, 2021
Released · Apr 02, 2021
6.2-inch · 2400x1080px
6.5-inch · 2400x1080px
Triple camera
Triple camera
8GB · 128GB
8GB · 128GB
4000 mAh
4500 mAh
Check prices Check prices

Availability

Officially announced
Jan 14, 2021 Mar 23, 2021
MSRP
$ 800 $ 729

Design

Dimensions
5.97 x 2.80 x 0.31 inches
151.7 x 71.2 x 7.9 mm
6.30 x 2.92 x 0.34 inches
160 x 74.2 x 8.7 mm
Weight
6.03 oz (171.0 g) 6.77 oz (192.0 g)
Materials
Back: Plastic
Frame: Aluminum
Back: Glass (Corning Gorilla Glass)
Frame: Aluminum
Resistance
Water, Dust; IP68
Biometrics
2D Face unlock, Ultrasonic in-screen fingerprint 2D Face unlock, Optical in-screen fingerprint
Keys
Right: Volume control, Lock/Unlock key Left: Volume control; Right: Lock/Unlock key, Other
Colors
Phantom pink, Violet, Gray, White Winter Mist, Arctic Sky, Astral Black

Display

Size
6.2-inch, 86.06% screen-to-body 6.5-inch, 87.27% screen-to-body
Type
Dynamic AMOLED, 120Hz, HDR, 1300 nits AMOLED, 120Hz, HDR
Resolution
2400x1080px, 20:9 ratio, 424 PPI 2400x1080px, 20:9 ratio, 402 PPI
Protection
Corning Gorilla Glass Victus Corning Gorilla Glass

Hardware

System chip
Snapdragon 888 (5 nm) Snapdragon 888 (5 nm)
Processor
Octa-core
1x2.84GHz Kryo 680
3x2.42GHz Kryo 680
4x1.80GHz Kryo 680
Octa-core
2840 MHz
Kryo 680
GPU
Adreno 660 Adreno 660
Memory
8GB (LPDDR5)/128GB (UFS 3.0)
8GB/256GB
8GB (LPDDR5)/128GB (UFS 3.1)
12GB/256GB
Storage expansion
not expandable not expandable
OS
Android (13, 12, 11) Android (11)

Battery

Type
4000 mAh, Li - Polymer 4500 mAh
Charging
Qualcomm Quick Charge 2.0, USB Power Delivery, Samsung Adaptive Fast Charging
Qi and Powermat wireless charging, Reverse wireless charging
OnePlus Warp Charge
Qi wireless charging
Charge speed
Wired: 25.0W
Wireless: 15.0W
Wired: 65.0W
Wireless: 15.0W
PhoneArena Battery Tests
Battery Life Estimate
4h 28min
Browsing
7h 47min
Video
7h 36min
Gaming
7h 9min
Battery Life Estimate
5h 50min
Browsing
11h 29min
Video
9h 16min
Gaming
9h 6min

Camera

Rear
Triple camera Triple camera
Main camera
12 MP (OIS, PDAF)
Aperture size: F1.8
Focal length: 26 mm
Sensor size: 1/1.76"
Pixel size: 1.8 μm
48 MP (PDAF)
Aperture size: F1.8
Focal length: 23 mm
Sensor size: 1/1.4"
Pixel size: 1.12 μm
Second camera
12 MP (Ultra-wide, Autofocus)
Aperture size: F2.2
Focal Length: 13 mm
Sensor size: 1/2.55"
Pixel size: 1.4 μm
50 MP (Ultra-wide)
Aperture size: F2.2
Focal Length: 14 mm
Sensor size: 1/1.56"
Third camera
64 MP (Telephoto, OIS, PDAF)
Aperture size: F2.0
Focal Length: 29 mm
Sensor size: 1/1.7"
Pixel size: 0.8 μm
2 MP (Black and White)
Flash
LED Dual LED
Video recording
8K UHD (24 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (960 fps)
OIS, HDR, Hyperlapse, Continuous autofocus, Video light, EIS
8K UHD (30 fps), 4K UHD (60 fps), 1080p (240 fps), 720p (480 fps)
HDR, Continuous autofocus, EIS
Front
10 MP (PDAF, HDR)
Video capture: 4K UHD (60 fps)
16 MP (EIS)

Connectivity & Features

Bluetooth
5.0 5.2
WLAN
a,b,g,n,ac,Wi-Fi 6,dual-band
MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax
a,b,g,n,ac,Wi-Fi 6,dual-band
MIMO, Wi-Fi Direct, Hotspot
802.11 a, b, g, n, ac, ax
USB
Type-C, USB 3.2 Type-C, USB 3.1
Sensors
Accelerometer, Gyroscope, Compass, Hall (for flip covers), Barometer, Ambient light sensor, Proximity sensor Accelerometer, Gyroscope, Compass, Ambient light sensor, Proximity sensor
Hearing aid compatible
M3/T3
Location
GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning GPS, A-GPS, Glonass, Galileo, BeiDou, Cell ID, Wi-Fi positioning
Other
NFC, ANT+ NFC

Multimedia

Headphones
No 3.5mm jack No 3.5mm jack
Speakers
Earpiece, Multiple speakers Earpiece, Loudspeaker, Multiple speakers
Features
32-Bit DAC, Dolby Atmos, aptX, Dolby Digital, Dolby Digital Plus Dolby Atmos
Screen mirroring
Wireless screen share
Additional microphone(s)
Noise cancellation

Cellular

5G
Bands n2, n5, n12, n25, n41, n66, n71, n77, n260, n261, SA, NSA, Sub-6, mmWave Bands n1, n2, n3, n5, n7, n8, n20, n25, n28, n38, n40, n41, n48, n66, n71, n77, n78
4G (FDD)
Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 18, 19, 20, 25, 26, 28, 30(2300 WCS), 66(AWS-3), 71(600) Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 17, 18, 19, 20, 25, 26, 28, 30(2300 WCS), 32(1500 L-band), 66(AWS-3), 71(600)
4G (TDD)
Bands 38, 39, 40, 41, 46, 48 Bands 38, 39, 40, 41, 46, 48
3G
Bands 1, 2, 4, 5, 8 Bands 1, 2, 4, 5, 8, 9, 19
Data Speed
LTE-A, HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS LTE-A Pro Cat 20 (2000/150 Mbit/s), HSDPA+ (4G) 42.2 Mbit/s, HSUPA 5.76 Mbit/s, UMTS
SIM type
Nano SIM Nano SIM

Regulatory Approval

FCC approval
Date approved: Dec 08, 2020
FCC ID value: A3LSMG991U
Date approved: Mar 24, 2021
FCC ID value: 2ABZ2-EF136
Measured SAR
Head: 0.36 W/kg
Body: 1.08 W/kg
Simultaneous Transmission: 3.96 W/kg
Wireless Router: 1.09 W/kg
Phablet: 2.49 W/kg
Head: 1.20 W/kg
Body: 0.78 W/kg
Simultaneous Transmission: 1.48 W/kg
Wireless Router: 1.18 W/kg

Alternative variants

with 256GB storage
Memory 256GB
With 12GB RAM and 256GB storage
Memory 12GB/256GB
MSRP $ 829
for Europe
System chip Samsung Exynos 2100 (5 nm)
Processor Octa-core
2900 MHz
1x2.91GHz Cortex-X1
3x2.81G​Hz Cortex-A78
4x2.2G​Hz Cortex-A55
GPU Mali G78 MP14
Weight 5.96 oz (169.0 g)
5G Bands SA, NSA, Sub-6
FCC approval Date approved: Dec 18, 2020
FCC ID value: A3LSMG991B
Measured SAR Head: 0.42 W/kg
Body: 0.94 W/kg
Simultaneous Transmission: 3.96 W/kg
Wireless Router: 1.34 W/kg
Phablet: 2.37 W/kg
FCC OKs Cingular\'s purchase of AT&T Wireless